4

Hard to say:
Typically, a hair test goes back 90 days, but it depends on how fast your hair grows. They are looking at 1 1/2 inches of hair, closest to the scalp. Incidentally, you should not avoid it by shaving your head. They would just use some other hair. And if they do, it is pretty obvious that you are trying to hide something.
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6

Shouldn't :
As long as this medication is prescribed by your physician -- that is not a reason to exclude you from employment. Be honest with your potential employer and bring the prescription bottle to your drug test so they can verify it. These types of drug tests want to detect illicit drug use or abuse. Hope that helps!
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11

Yes it will:
If you are taking sertraline (Zolof) about one third of time will give false positive for benzodiazepines You should be truthful for job drug screening , if Rx ed medication , your condition will not hinder the job performance a note from your doctor is enough , and be truthful in your application.
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13

"POT":
The standard detection window for the hair test is 90 days. Because hair grows about 1.5 inches (3.8 cm) in 90 days, hairs with a length of about 1.5 inches (3.8 cm) are targeted for cutting. Longer hairs will give a longer window of detection.
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15

Not necessarily:
The only SPECIFIC test for heroin is a test for its metabolite 6-monoacetylmorphine or 6MAM. I am not sure whether this is available in swab form, but the first thing with ANY positive test on a screening test, such as a urine drug screen or oral fluid swab is to do the confirmatory test. If they have not done that, they are not following procedure. There also needs to be chain-of-custody on it.
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16

The hair test:
can give a "look back" up to 3 months! HOWEVER it is only of use for agencies/employers with ZERO tolerance for alcohol use. IT'S TOO SENSITIVE!!!!!
If you drink AT ALL and a potential EMPLOYER is requiring a PRE-PLACEMENT hair test FORGET ABOUT THAT JOB untillyou have had NO alcohol for 90 days!!!!!
MY opinion Only
Hope it helps!
Dr Z
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19

Depends:
If they check the hair follicle, the test should be negative. But if they check further down the hair shaft, it may be positive. After 14 months a single exposure to marijuana should show up positive at about 17 cm (assuming normal hair growth). If that was the only time your used, hair on either side may be negative. In fact this type of analysis is used to establish history of episodic use.
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Maybe.:
If the lab just tests the growing end of the hair follicle, amphetamine may be present up to 90 days. Stimulants are "out of your system" at the end of each day, but they get incorporated into hair and stay there even after you stop taking the medication. Detection in hair then depends on how quickly your hair grows--and which part of it they test.
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